更多"SQL语言中,能正确实现级联删除的命令的是( )。"的相关试题:
[单项选择]SQL语言中,能正确实现级联删除的命令是()。
A. ON DELETE CASCADES
B. ON DELETE RESTRICTED
C. ON DELETE NULLIFIES
D. ON DELETE DEFAULT
[单项选择]SQL语言中,级联删除的短语是
A. WHEN DELETE RESTRICT
B. ON DELETE RESTRICT
C. ON DELETE SET NULL
D. ON DELETE CASCADE
[单项选择]在SQL语言中,能正确实现级联删除的命令是( )。
A. ONDELETE CASCADES
B. ONDELETE RESTRICTED
C. ONDELETE NULLIFIES
D. ONDELETE DEFAULT
[单项选择]SQL语言中,删除一个表的命令是
A. DELETE
B. DROP
C. CLEAR
D. REMOVE